Wall flatness measuring tool for engineering supervision

Abstract

The utility model relates to a wall flatness measuring tool for engineering supervision. The wall flatness measuring tool comprises a main ruler (11) and an auxiliary ruler (12), wherein one ends of the main ruler (11) and the auxiliary ruler (12) are connected through a hinge; an arc-shaped hole (21) and an arc-shaped clamping strip (22); an unlocking rod (30) is arranged on the main ruler (11) in a sliding manner; after the main ruler (11) and the auxiliary ruler (12) are unfolded, an arc-shaped clamping strip (22) on the end face of the auxiliary ruler (12) is clamped into an arc-shaped hole (21) in the end face of the main ruler (11), so that the main ruler (11) and the auxiliary ruler (12) are unfolded and locked. After the main ruler (11) and the auxiliary ruler (12) are folded, an arc-shaped clamping strip (22), close to the side face of the main ruler (11), on the auxiliary ruler (12) is clamped into an arc-shaped hole (21), close to the side face of the auxiliary ruler (12), on the main ruler (11), so that the main ruler (11) and the auxiliary ruler (12) are folded and locked, unfolding and folding locking of the main ruler (11) and the auxiliary ruler (12) are achieved, shaking is avoided, unlocking is achieved by pressing an unlocking rod (30), operation is convenient in actual use, and practicability is high. The measurement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building detection, in particular to a wall flatness measuring tool for engineering supervision. Background Art

[0002] Flatness, also known as flatness, is one of the four common shape tolerances in product geometric specifications and one of the key indicators for evaluating the quality of product forming surfaces. In the field of construction engineering, the wall itself also has flatness requirements. During the construction and evaluation process, the flatness of the wall needs to be measured to determine whether the wall accuracy meets the standards. The flatness measuring device is one of the indispensable devices in the supervision of construction projects. Its professional name is a ruler. It can be unfolded and attached to the surface of the wall that needs to be supervised and monitored under the operation of the supervisor, and judge whether the wall is flat based on the fit between the ruler tip and the wall surface. The main ruler and the auxiliary ruler of the flatness measuring device need to be limited and fixed after unfolding or folding to avoid shaking. At present, the limit fixing method of bolts and nuts is often used, but it is inconvenient to operate in actual use, resulting in low measurement efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing flatness measuring device often adopts a limit fixing method of bolts and nuts, but it is inconvenient to operate in actual use, resulting in low measurement efficiency.

[0004] In order to solve the above problems, the utility model provides a wall flatness measuring tool for engineering supervision, comprising a main ruler and a secondary ruler connected by a hinge at one end, an arc hole is opened on the main ruler with the hinge axis as the center, and the arc hole passes through the end face of the main ruler and the side face close to the secondary ruler; an arc clipping strip that is engaged with the arc hole is fixed on the secondary ruler with the hinge axis as the center, and the two arc clipping strips are respectively fixed on the end face of the secondary ruler and the side face close to the main ruler; an unlocking rod is slidably provided on the main ruler, and the unlocking rod is pressed to unlock the arc clipping strip and the arc hole.

[0005] The wall flatness measuring tool for engineering supervision provided by the utility model also has the following technical features:

[0006] The main scale is provided with a slide groove, which is arranged along the radial direction of the arc hole and is connected with the arc hole. A bayonet is slidably installed in the slide groove through a compression spring. A groove corresponding to the bayonet is provided on the arc-shaped clamping strip, and the end of the bayonet can be inserted into the groove so that the arc-shaped clamping strip and the arc hole are engaged with each other.

[0007] The latch pin is provided with a guide groove, the guide surface of the guide groove is inclined and contacts with one end of the unlocking rod, and the unlocking rod is pressed to disengage the latch pin from the groove.

[0008] A guide hole is provided on the main scale, and the unlocking rod slides along the guide hole. The other end of the unlocking rod extends out of the guide hole and is fixed with a pressing block.

[0009] The ends of the arc-shaped clamping strip and the ends of the clamping pin are both provided with rounded corners.

[0010] Both ends of the arc-shaped hole and the ends of the arc-shaped clamping strip are provided with rounded corners.

[0011] A level is provided on the main ruler, and support pads are fixed to the other ends of the main ruler and the auxiliary ruler.

[0012] The utility model has the following beneficial effects: after the main scale and the auxiliary scale are unfolded, the arc-shaped clamping strip on the end face of the auxiliary scale is inserted into the arc-shaped hole on the end face of the main scale to lock the main scale and the auxiliary scale when they are unfolded; after the main scale and the auxiliary scale are folded, the arc-shaped clamping strip on the auxiliary scale close to the side face of the main scale is inserted into the arc-shaped hole on the main scale close to the side face of the auxiliary scale to lock the main scale and the auxiliary scale when they are folded, thereby realizing the unfolding and folding locking of the main scale and the auxiliary scale to avoid shaking, and unlocking is realized by pressing the unlocking lever, which is easy to operate in actual use and improves the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the utility model;

[0014] Figure 2 for Figure 1 A partial enlarged view of

[0015] Figure 3 It is a structural schematic diagram of the bayonet;

[0016] Figure 4 It is an axonometric drawing of the utility model;

[0017] Figure 5 for Figure 4 The motion state change diagram. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0019] like Figures 1 to 5 As shown, the utility model wall flatness measuring tool for engineering supervision comprises a main ruler 11 and a secondary ruler 12 connected by a hinge at one end, the main ruler 11 is provided with an arc hole 21 with the hinge axis as the center, the arc hole 21 passes through the end face of the main ruler 11 and the side face close to the secondary ruler 12; an arc clip 22 which is engaged with the arc hole 21 is fixed on the secondary ruler 12 with the hinge axis as the center, the two arc clips 22 are respectively fixed on the end face of the secondary ruler 12 and the side face close to the main ruler 11; an unlocking rod 30 is slidably provided on the main ruler 11, and the unlocking rod 30 is pressed to unlock the arc clip 22 and the arc hole 21.

[0020] After the main scale 11 and the auxiliary scale 12 of the utility model are unfolded, the arc-shaped clamping strip 22 on the end surface of the auxiliary scale 12 is inserted into the arc-shaped hole 21 on the end surface of the main scale 11 to lock the main scale 11 and the auxiliary scale 12 to be unfolded; after the main scale 11 and the auxiliary scale 12 are folded, the arc-shaped clamping strip 22 on the auxiliary scale 12 close to the side of the main scale 11 is inserted into the arc-shaped hole 21 on the main scale 11 close to the side of the auxiliary scale 12 to lock the main scale 11 and the auxiliary scale 12 to be folded, thereby realizing the unfolding and folding locking of the main scale 11 and the auxiliary scale 12 to avoid shaking, and unlocking is realized by pressing the unlocking lever 30, which is easy to operate in actual use and improves the measurement efficiency.

[0021] Among them, technical personnel in this field can change the length of the arc-shaped clip 22, that is, the central angle of the arc-shaped clip 22, according to actual applications, and change the setting position of the arc-shaped hole 21, so as to meet the requirements of the clamping and locking of the main ruler 11 and the auxiliary ruler 12 while avoiding the inconvenience of storage and placement caused by the arc-shaped clip 22 on the end face of the auxiliary ruler 12 being too large.

[0022] Preferably, see Figure 2 A slide groove 23 is provided on the main scale 11, and the slide groove 23 is arranged along the radial direction of the arc hole 21 and is connected to the arc hole 21. A bayonet 25 is slidably installed in the slide groove 23 through a compression spring 24. A groove 26 corresponding to the bayonet 25 is provided on the arc-shaped clamping strip 22, and the end of the bayonet 25 can be clamped into the groove 26, so that the arc-shaped clamping strip 22 and the arc hole 21 are matched and clamped.

[0023] Preferably, see Figure 3 The latch 25 is provided with a guide groove 31 , the guide surface of the guide groove 31 is inclined and contacts one end of the unlocking rod 30 , and the unlocking rod 30 is pressed to disengage the latch 25 from the groove 26 .

[0024] The guide surface of the guide groove 31 is tilted from close to and away from the compression spring 24 and from close to and away from the unlocking rod 30 , that is, the guide surface of the guide groove 31 gradually becomes deeper in the direction away from the compression spring 24 .

[0025] Preferably, a guide hole 32 is opened on the main ruler 11, and the unlocking rod 30 slides along the guide hole 32, and the other end of the unlocking rod 30 extends out of the guide hole 32 and is fixed with a pressing block 33.

[0026] The unlocking rod 30 is sheathed with a spring, and both ends of the spring are respectively fixed to the main scale 11 and the pressing block 33 to prevent the unlocking rod 30 from being separated from the guide hole 32.

[0027] Preferably, the ends of the arc-shaped clamping strip 22 and the ends of the clamping pin 25 are both rounded.

[0028] Through the above arrangement, the utility model realizes that the rounded corner of the end of the latch pin 25 can slide into the groove 26 along the rounded corner of the end of the arc-shaped latch strip 22 .

[0029] Preferably, both ends of the arc-shaped hole 21 and the ends of the arc-shaped clamping strip 22 are provided with rounded corners.

[0030] Preferably, a level 13 is provided on the main ruler 11 , and support pads 14 are fixed to the other ends of the main ruler 11 and the auxiliary ruler 12 .

[0031] The main ruler 11 and the auxiliary ruler 12 are both provided with handles for easy hand-held operation.

[0032] The working principle of the utility model is as follows:

[0033] When it is necessary to measure the flatness of the wall, the unlocking lever 30 on the main ruler 11 close to the side of the auxiliary ruler 12 is pressed, and one end of the unlocking lever 30 contacts the guide surface of the guide groove 31 and slides along it, so that the locking pin 25 is disengaged from the groove 26, and then the main ruler 11 and the auxiliary ruler 12 are rotated around the hinge axis and unfolded, so that the arc-shaped clamping strip 22 on the end surface of the auxiliary ruler 12 is inserted into the arc-shaped hole 21 on the end surface of the main ruler 11, and the corresponding rounded corner of the end of the locking pin 25 slides along the rounded corner of the end of the arc-shaped clamping strip 22 into the groove 26, so that the main ruler 11 and the auxiliary ruler 12 are unfolded and locked;

[0034] After measuring the flatness of the wall, the main ruler 11 and the auxiliary ruler 12 need to be folded and stored, and the unlocking rod 30 on the main ruler 11 close to the end face of the auxiliary ruler 12 is pressed. One end of the unlocking rod 30 contacts the guide surface of the guide groove 31 and slides along it, so that the latch 25 is disengaged from the groove 26, and then the main ruler 11 and the auxiliary ruler 12 are rotated in opposite directions around the hinge axis and folded, so that the arc-shaped clip 22 on the auxiliary ruler 12 close to the side of the main ruler 11 is inserted into the arc-shaped hole 21 on the main ruler 11 close to the side of the auxiliary ruler 12, and the corresponding rounded corner of the end of the latch 25 slides along the rounded corner of the end of the arc-shaped clip 22 into the groove 26, so that the main ruler 11 and the auxiliary ruler 12 are folded and locked, thereby realizing the unfolding and folding locking of the main ruler 11 and the auxiliary ruler 12 to avoid shaking, and unlocking is achieved by pressing the unlocking rod 30, which is easy to operate in actual use and improves measurement efficiency.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A wall flatness measuring tool for engineering supervision, comprising a main ruler (11) and a secondary ruler (12) connected at one end by a hinge, characterized in that: An arc-shaped hole (21) is formed on the main ruler (11) with the hinge axis as the center of the circle, and the arc-shaped hole (21) passes through the end surface of the main ruler (11) and the side surface close to the auxiliary ruler (12); an arc-shaped clamping strip (22) is fixed on the auxiliary ruler (12) with the hinge axis as the center of the circle and is engaged with the arc-shaped hole (21), and the two arc-shaped clamping strips (22) are respectively fixed on the end surface of the auxiliary ruler (12) and the side surface close to the main ruler (11); an unlocking rod (30) is slidably provided on the main ruler (11), and the unlocking rod (30) is pressed to unlock the arc-shaped clamping strip (22) and the arc-shaped hole (21).

2. The wall flatness measuring tool for engineering supervision according to claim 1 is characterized in that: The main ruler (11) is provided with a slide groove (23), which is arranged along the radial direction of the arc hole (21) and communicated with the arc hole (21). A bayonet (25) is slidably installed in the slide groove (23) via a compression spring (24). The arc-shaped clamping strip (22) is provided with a groove (26) corresponding to the bayonet (25), and an end of the bayonet (25) can be clamped into the groove (26), so that the arc-shaped clamping strip (22) and the arc hole (21) are matched and clamped.

3. The wall flatness measuring tool for engineering supervision according to claim 2 is characterized in that: The latch pin (25) is provided with a guide groove (31), the guide surface of the guide groove (31) is arranged to be inclined and to contact one end of an unlocking rod (30), and the unlocking rod (30) is pressed to disengage the latch pin (25) from the groove (26).

4. The wall flatness measuring tool for engineering supervision according to claim 3 is characterized in that: The main scale (11) is provided with a guide hole (32), the unlocking rod (30) slides along the guide hole (32), and the other end of the unlocking rod (30) extends out of the guide hole (32) and is fixed with a pressing block (33).

5. The wall flatness measuring tool for engineering supervision according to claim 2, characterized in that: The ends of the arc-shaped clamping strip (22) and the ends of the clamping pin (25) are both provided with rounded corners.

6. The wall flatness measuring tool for engineering supervision according to claim 1, characterized in that: Both ends of the arc-shaped hole (21) and the end of the arc-shaped clamping strip (22) are provided with rounded corners.

7. The wall flatness measuring tool for engineering supervision according to claim 1, characterized in that: The main ruler (11) is provided with a level gauge (13), and the other ends of the main ruler (11) and the auxiliary ruler (12) are fixed with support pads (14).

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